Storytime at the library is a favorite part of the week for Leilong's friends, and they want to share it with their brontosaurus friend. But even though he's excited about entering the library and following all the rules the children share with him about library behavior, he is just too big to go inside. Plus, as various librarians keep telling him, he needs a library card. While his friends go inside and listen to the storyteller, Leilong remains outside, but he still manages to hear the story and get caught up in what happens to Grandma during "Little Red Riding Hood." When he fears for her life or the life of the storyteller, he roars in concern and causes problems in the building. Banned from the library, the dinosaur leaves, but all the children inside decide to join him. The manager of the library has second thoughts about what's happening and realizes that this might present an opportunity for outreach. Thus, Leilong becomes the world's largest mobile library, bringing books all over the neighborhood, and sitting quietly during storytime, especially when the read aloud is a book about dinosaurs. Youngsters will love the facial expressions and colors of this picture book while older readers may wince a little bit at how concerned the librarians seemed to be about those library cards instead of what really should have mattered. The ending seemed to be a bit abrupt for my taste, and I longed for more development as to the change in the manager's mind about Leilong.